PMID: 3751552Jul 1, 1986Paper

Echocardiographic measurements in normal preterm and term neonates

Acta paediatrica Scandinavica
F J WaltherP Y Wu

Abstract

To the purpose of better defining normative data on intracardiac dimensions and systolic time intervals in very low birth weight infants, we collected M-mode echocardiograms from 210 healthy preterm and term neonates with birth weights between 780 and 5,350 g and gestational ages ranging from 26 to 43 weeks. Fifty-nine neonates were less than 24 h, 62 were 25-48 h, and 89 were 48-144 h of age. Diastolic and systolic left ventricular dimensions increased gradually with advancing birth weight (r = +0.84 and 0.78). Left atrial and aortic root dimensions tended to show a parabolic relationship with birth weight, increments were reduced at higher birth weights (r = +0.92 and 0.85). The shortening fraction of the left ventricle (mean +/- SD 33.8 +/- 4.9%) and the left atrial/aortic ratio (1.16 +/- 0.10) were constant throughout all weight subgroups. Pre-ejection periods and ejection times of both ventricles were reduced in preterm infants due to their higher heart rates, but left and right ventricular PEP/ET ratios in preterm and term infants were comparable. Septal thickness in diastole and in systole tended to increase slowly with advancing birth weight, but correlation coefficients were low. This information is currently used as d...Continue Reading

References

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Citations

Jul 1, 1988·Journal of the American College of Cardiology·S W ZarichR W Nesto
Sep 21, 2000·European Journal of Ultrasound : Official Journal of the European Federation of Societies for Ultrasound in Medicine and Biology·J MolickiF van Bel
Sep 22, 2005·Archives of Disease in Childhood. Fetal and Neonatal Edition·L F J MildenhallJ E Harding
Oct 26, 2010·Archives of Disease in Childhood. Fetal and Neonatal Edition·Alan M GrovesA David Edwards
Jan 1, 1993·Archives of Disease in Childhood·A B Gill, A M Weindling
Oct 10, 2014·Annals of Pediatric Cardiology·Lulu AbushabanPrem N Sharma
Nov 22, 2011·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Massimiliano CantinottiClaudio Passino
Nov 13, 2012·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Wadi MawadFrederic Dallaire
Aug 15, 2014·Journal of Perinatology : Official Journal of the California Perinatal Association·S NooriUNKNOWN PDA Ligation/Hypotension Trial Investigators
Nov 4, 2017·The Journal of Physiology·Anderson H KuoPeter W Nathanielsz
Oct 1, 1991·Acta paediatrica Scandinavica·F Van BelF J Walther
Dec 1, 1990·British Journal of Sports Medicine·Y S Lo, M K Chin

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